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Buttermilk Mashed Potatoes
Tangy mashed potatoes with enough structure to hold gravy, pan sauce, or braised meat.
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If this is your kind of supper, breakfast, or bake, keepCreamy Garlic Chicken Skillet, Big-Batch Chicken and Dumplings, and Family Pan Baked Spaghetti nearby for the next pan.
If you want a cleaner fix or a little backup, these guides helpMake-Ahead Mashed Potatoes Guide and How to Swap Buttermilk by Weight.
If you want the household logic around this pan, keepBefore the Freezer Fills Wrong — Here Is What Earns the Space and At 7:10, Breakfast Starts Too Fast — Here Is How We Hold It nearby too.
Yukon Gold potatoes keep the texture creamy without needing a ricer. The buttermilk gives the mash enough acidity to balance richer main dishes, which is why this recipe works especially well with pan sauces and roasted meats.
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Recipe details
Timing & yield
- Prep
- 15 minutes
- Cook / bake
- 25 minutes
- Total
- 40 minutes
- Yield
- 6 servings
Ingredients
Potatoes
- 3 pounds Yukon Gold potatoes, peeled and cut into chunks
- 1 tablespoon kosher salt
Finish
- 6 tablespoons unsalted butter
- 3/4 cup warm buttermilk
- 1 garlic clove, finely grated
- 1/2 teaspoon black pepper
Method
- Step 1. Add the potatoes and salt to a large pot, cover with cold water, and bring to a boil.
- Step 2. Reduce to a strong simmer and cook until the potatoes are fully tender and break apart with little resistance.
- Step 3. Drain well, return the potatoes to the warm pot, and let residual heat steam off excess moisture for 2 minutes.
- Step 4. Mash with the butter first, then add the warm buttermilk, garlic, and pepper in stages until the texture is smooth but not gluey.
- Step 5. Taste and adjust the salt, then cover loosely until serving.
Equipment
- large pot
- potato masher
- fine grater
Storage & safety
Refrigerate for up to 4 days. Reheat with a small amount of milk or cream to loosen the texture.
Troubleshooting
- Potatoes turned gluey
- They were likely overmixed. Switch to a spatula and fold in warm butter or cream instead of stirring aggressively.
- Potatoes taste flat
- Add salt in small increments while warm. Cold potatoes hide underseasoning.
Recipe rescue notes
- Mash turned loose before serving
-
Likely cause: The potatoes held extra water or the dairy went in too fast.
Fix: Set the pot over low heat and fold gently for a minute or two until excess moisture cooks off.
Next time: Steam the drained potatoes dry in the warm pot before mashing.
Substitutions
- Buttermilk
- Use plain yogurt thinned with enough milk to loosen the potatoes gradually. — Add the substitute a little at a time so the mash stays creamy instead of gummy.
Carryover / Next Meal Ideas
Crispy potato cakes
Chill the potatoes, shape them into patties, and brown them in a skillet for a second-day side dish.
- If the mash feels soft, stir in a spoonful of flour before shaping.
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